公开(公告)号：US20090283516A1

公开(公告)日：2009-11-19

申请号：US12381794

申请日：2009-03-17

Applicant: Clayton R. DeCamillis ,  Lars Haubold ,  Richard C. Hazlehurst ,  Jerry K. Wessel

Inventor： Clayton R. DeCamillis ,  Lars Haubold ,  Richard C. Hazlehurst ,  Jerry K. Wessel

IPC: H05B6/70

CPC classification number: H05B6/705 ,  H05B6/6402

Abstract: A microwave power supply includes a magnetron, a waveguide configured to carry microwave power from the magnetron to a selected load, and an adjustable impedance element connected to the waveguide at a location upstream from the magnetron. The power supply may further include provision for varying the filament voltage to the magnetron tube. In the associated method, the adjustable upstream impedance and the adjustable filament voltage may be combined (and may be adjusted iteratively) to achieve high Q output. The load may be an applicator cavity for processing selected materials. The invention is particularly suitable for high Q cavities, such as single mode cavities, where it is desirable to match the output of the microwave source to the characteristics of the cavity for efficient operation. The adjustable upstream impedance element represents an electrical characteristic that may be achieved through various physically adjustable devices such as a movable backwall, a sliding short, a stub tuner, or an adjustable iris.

Abstract translation: 微波电源包括磁控管，被配置为将微波功率从磁控管传送到所选择的负载的波导以及在磁控管上游的位置处连接到波导的可调阻抗元件。 电源还可以包括用于改变对磁控管的灯丝电压。 在相关联的方法中，可调节的上游阻抗和可调节灯丝电压可以组合（并且可以被迭代地调整）以实现高Q输出。 负载可以是用于处理所选材料的施加器腔。 本发明特别适合于高Q腔，例如单模腔，其中期望将微波源的输出与腔的特性相匹配以进行有效的操作。 可调节的上游阻抗元件表示可以通过各种物理上可调整的装置（例如可移动的后壁，滑动短路，短线调谐器或可调节的虹膜）实现的电特性。